Pellet dropper device for ELM control on DIII-D

被引：0

作者：

Combs, S. K. ^{[1
]}

R-Baylor, L. ^{[1
]}

Foust, C. R. ^{[1
]}

McGill, J. M. ^{[1
]}

Caughman, J. B. O. ^{[1
]}

Fehling, D. T. ^{[1
]}

Hansink, M. J. ^{[2
]}

Jernigan, T. C. ^{[1
]}

Rasmussen, D. A. ^{[1
]}

机构：

[1] Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA

[2] Gen Atom, San Diego, CA 92186 USA

来源：

22ND IEEE/NPSS SYMPOSIUM ON FUSION ENGINEERING | 2007年

关键词：

ELM control; pellet injection; plasma; tokamak;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

On several experimental tokamaks, pellet injection has been found to trigger edge localized modes (ELMs) in H-mode plasmas. This can provide a technique for ELM amelioration by reducing the ELM size with small high-frequency pellets. The key for success appears to be small pellets that penetrate just beyond the separatix, enough to trigger an ELM, but not enough to strongly fuel the plasma. To provide a source of small pellets, a pellet dropper device has been developed at the Oak Ridge National Laboratory and installed on the DIII-D tokamak. The pellet dropper consists of a batch extruder with an exit nozzle to provide a filament of solid deuterium (nominal 1-mm diameter), from which pellets are punched/dropped at rates of up to approximate to 50 Hz and at speeds of <10 m/s. The pellets are propelled directly downward and through a vertical injection port on DIII-D. In this paper, the design and the initial test results are presented, and the installation on DIII-D is described.

引用

页码：179 / +

页数：2

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[11] Advances in radiated power control at DIII-D [J].

Eldon, D. ;

Kolemen, E. ;

Humphreys, D. A. ;

Hyatt, A. W. ;

Jarvinen, A. E. ;

Leonard, A. W. ;

McLean, A. G. ;

Moser, A. L. ;

Petrie, T. W. ;

Walker, M. L. .

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[12] Dispersive shell pellet injection modeling and validation for DIII-D disruption mitigation [J].

Izzo, V. A. .

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[13] Pellet triggering of edge localized modes in low collisionality pedestals at DIII-D [J].

Wilcox, R. S. ;

Baylor, L. R. ;

Bortolon, A. ;

Knolker, M. ;

Lasnier, C. J. ;

Shiraki, D. ;

Bykovab, I ;

Chrystal, C. ;

Scotti, F. ;

Paz-Soldanu, C. ;

Wingen, A. .

NUCLEAR FUSION, 2022, 62 (02)

[14] Simulation of DIII-D disruption with argon pellet injection and runaway electron beam [J].

Zhao, C. ;

Liu, C. ;

Jardin, S. C. ;

Ferraro, N. M. ;

Lyons, B. C. .

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[15] Three-dimensional equilibrium reconstruction on the DIII-D device [J].

Lazerson, S. A. .

NUCLEAR FUSION, 2015, 55 (02)

[16] Designing, Constructing, and Using Plasma Control System Algorithms on DIII-D [J].

Hyatt, Alan ;

Humphreys, Dave A. ;

Welander, Anders ;

Eidietis, Nicholas ;

Ferron, John R. ;

Johnson, Robert ;

Kolemen, Egemen ;

Lanctot, Matthew ;

Penaflor, Benjamin ;

Turco, Francesca ;

Walker, Mike L. ;

Coon, Robert ;

Qian, Jinping .

IEEE TRANSACTIONS ON PLASMA SCIENCE, 2014, 42 (03) :421-426

[17] Advances in the physics understanding of ELM suppression using resonant magnetic perturbations in DIII-D [J].

Wade, M. R. ;

Nazikian, R. ;

deGrassie, J. S. ;

Evans, T. E. ;

Ferraro, N. M. ;

Moyer, R. A. ;

Orlov, D. M. ;

Buttery, R. J. ;

Fenstermacher, M. E. ;

Garofalo, A. M. ;

Lanctot, M. A. ;

McKee, G. R. ;

Osborne, T. H. ;

Shafer, M. A. ;

Solomon, W. M. ;

Snyder, P. B. ;

Suttrop, W. ;

Wingen, A. ;

Unterberg, E. A. ;

Zeng, L. .

NUCLEAR FUSION, 2015, 55 (02)

[18] ELM pacing using modulated non-axisymmetric magnetic fields on DIII-D [J].

Solomon, W. M. ;

Burrell, K. H. ;

Garofalo, A. M. ;

Groebner, R. J. ;

Lasnier, C. J. ;

Makowski, M. A. ;

Osborne, T. H. ;

Reimerdes, H. ;

deGrassie, J. S. ;

Doyle, E. J. ;

Evans, T. E. ;

Fenstermacher, M. E. ;

Jackson, G. L. ;

Schaffer, M. J. .

NUCLEAR FUSION, 2012, 52 (03)

[19] Numerical analysis of the effects of normalized plasma pressure on RMP ELM suppression in DIII-D [J].

Orlov, D. M. ;

Moyer, R. A. ;

Evans, T. E. ;

Mordijck, S. ;

Osborne, T. H. ;

Fenstermacher, M. E. ;

Snyder, P. B. ;

Unterberg, E. A. .

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[20] DIII-D diagnostic systems [J].

Boivin, RL ;

Luxon, JL ;

Austin, ME ;

Brooks, NH ;

Burrell, KH ;

Doyle, EJ ;

Fenstermacher, ME ;

Gray, DS ;

Groth, M ;

Hsieh, CL ;

Jayakumar, RJ ;

Lasnier, CJ ;

Leonard, AW ;

McKee, GR ;

Moyer, RA ;

Rhodes, TL ;

Rost, IC ;

Rudakov, DL ;

Schaffer, MJ ;

Strait, EI ;

Thomas, DM ;

Van Zeeland, M ;

Watkins, JG ;

Watson, GW ;

West, WP ;

Wong, CPC .

FUSION SCIENCE AND TECHNOLOGY, 2005, 48 (02) :834-851

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